{"id":54740,"date":"2020-01-03T00:00:00","date_gmt":"2020-01-02T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/poslednee-pokolenie-besprovodnoj-svyazi"},"modified":"2020-02-18T14:02:47","modified_gmt":"2020-02-18T11:02:47","slug":"poslednee-pokolenie-besprovodnoj-svyazi","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/administrirovanie\/poslednee-pokolenie-besprovodnoj-svyazi","title":{"rendered":"Ultima genera\u021bie de comunica\u021bii wireless","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

C\u00e2te genera\u021bii de comunica\u021bie wireless vor putea s\u0103 creasc\u0103 frecven\u021bele undelor \u0219i viteza de transfer al datelor p\u00e2n\u0103 c\u00e2nd acest lucru nu va mai avea sens din punct de vedere fizic?<\/h3>\n

\n\"Ultima
\n
\nUnul dintre principalele argumente de marketing pentru comunica\u021bia de genera\u021bie 5G este viteza superioar\u0103 comparativ cu oricare dintre genera\u021biile anterioare, \u0219i \u00eentr-o m\u0103sur\u0103 considerabil\u0103. \u00cen special, acest lucru este facilitat de utilizarea undelor millimetrice. Utilizarea undelor millimetrice, adic\u0103 frecven\u021be mai \u00eenalte comparativ cu cele folosite vreodat\u0103 \u00een 2G, 3G sau 4G, a determinat furnizorii, \u00een special AT&T \u0219i T-Mobile, s\u0103 reconsidere desf\u0103\u0219urarea re\u021belelor 5G \u2013 deoarece cre\u0219terea frecven\u021bei necesit\u0103 plasarea unor micii emi\u021b\u0103tori celulari mai aproape unii de al\u021bii.<\/p>\n

Ideea 6G, care deocamdat\u0103 este \u00eenc\u0103 foarte vag formulat\u0103 \u00een min\u021bile cercet\u0103torilor, ar putea urma pa\u0219ii 5G, folosind frecven\u021be \u0219i mai \u00eenalte \u0219i cresc\u00e2nd viteza de transfer al datelor. Haide\u021bi s\u0103 ne distr\u0103m pe aceast\u0103 tem\u0103 \u2013 s\u0103 presupunem c\u0103 aceste caracteristici vor r\u0103m\u00e2ne importante \u0219i pentru viitoarele genera\u021bii de comunica\u021bie wireless, \u0219i s\u0103 ne g\u00e2ndim unde ne va duce aceast\u0103 cale? Cum va ar\u0103ta 8G? Dar 10G? La ce moment extrapolarea pentru viitoarele genera\u021bii de tehnologii wireless nu va mai avea sens din punct de vedere fizic?
\n<\/a><\/noindex>
\nEvident, cea mai mare parte a acestor genera\u021bii fictive de wireless este absurd\u0103. Viitoarele genera\u021bii de comunica\u021bie wireless vor c\u0103uta cu siguran\u021b\u0103 s\u0103 creasc\u0103 vitezele \u0219i volumele de date, dar cercet\u0103torii vor dezvolta \u0219i \u00eembun\u0103t\u0103\u021bi noi tehnologii care vor permite ob\u021binerea mai multor resurse din acelea\u0219i benzi de frecven\u021b\u0103. Tehnologiile de tip MIMO ne ofer\u0103 deja aceast\u0103 posibilitate \u00een re\u021belele 5G. Iar \u00een viitor, cine \u0219tie? Poate c\u0103 spectrul nostru va fi gestionat de AI sau vor ap\u0103rea alte idei.<\/p>\n

6G<\/h2>\n

\n\"Ultima
\n
\nAvem deja c\u00e2teva idei aproximative despre cum va ar\u0103ta urm\u0103toarea genera\u021bie de comunica\u021bii wireless. Acestea ar putea fi undele terahertz, cu ajutorul c\u0103rora cercet\u0103torii au transmis deja date pe o distan\u021b\u0103 de 20 de metri. \u0218i, dintr-o dat\u0103, preocuparea privind amplasarea sta\u021biilor 5G la fiecare 150 de metri nu mai pare at\u00e2t de nebuneasc\u0103 (cu toate acestea, r\u0103m\u00e2ne tot un demers costisitor). Dac\u0103 6G va continua s\u0103 \u00eenghesuie instalarea de mici emi\u021b\u0103tori, preg\u0103ti\u021bi-v\u0103 s\u0103 v\u0103 feri\u021bi de turnurile de telefonie mobil\u0103 amplasate la fiecare zece metri. Dar, cel pu\u021bin, vitezele de desc\u0103rcare vor fi de 1000 de ori mai rapide.<\/p>\n

6G va ap\u0103rea \u00een 2028: 1 Tb\/s, frecven\u021be de 3 THz, 7,7 secunde pentru a desc\u0103rca filmul \u201eAvengers: Endgame\u201d \u00een rezolu\u021bie 4K.<\/p>\n

8G<\/h2>\n

\n\"Ultima
\n
\nVom s\u0103ri la standardul 8G - aici deja am dep\u0103\u0219it spectrul vizibil \u0219i folosim aproape unde ultraviolete pentru a ne transmite texte. \u00cen cazul 8G, deja trebuie s\u0103 ne facem griji cu privire la radia\u021bia ionizant\u0103. De mult exist\u0103 preocup\u0103ri c\u0103 telefoanele mobile ar putea provoca cancer, totu\u0219i, comunica\u021biile mobile obi\u0219nuite au o energie mic\u0103 \u0219i, prin urmare, nu reprezint\u0103 radia\u021bie ionizant\u0103. Dar cu 8G, aceast\u0103 presupunere nu mai este valabil\u0103 - radia\u021bia ultraviolet\u0103 este cu adev\u0103rat ionizant\u0103, iar dac\u0103 vom r\u0103sp\u00e2ndi aceasta din fiecare turn de telefonie mobil\u0103, comunica\u021biile mobile vor provoca cu siguran\u021b\u0103 cancer. Sau poate nu - la asemenea lungimi de und\u0103, re\u021belele ar putea s\u0103 se bazeze pe fascicule concentrate \u00een loc de acoperirea unor mari suprafe\u021be. 8G ar putea transforma ora\u0219ul \u00eentr-un c\u00e2mp de joac\u0103 mortal, dar precis pentru laser tag invizibil, \u00een care sta\u021biile de baz\u0103 vor trimite fascicule de date c\u0103tre dispozitivele noastre, aproape ne\u00eencerc\u00e2nd s\u0103 ne ating\u0103.<\/p>\n

8G va ap\u0103rea \u00een 2048: 17,2 Pb\/s, frecven\u021be de 3,65 PHz, 435 ms pentru a desc\u0103rca filmul \u201eAvengers: Endgame\u201d \u00een rezolu\u021bie 4K.<\/p>\n

10G<\/h2>\n

\n\"Ultima
\n
\nSpune\u021bi, este nepl\u0103cut s\u0103 \u00ee\u021bi rup\u0103 oasele \u0219i s\u0103 te t\u00e2r\u0103\u0219ti la spital pentru a face o radiografie? Dar a\u0219tepta\u021bi, cur\u00e2nd vor ap\u0103rea smartphone-urile de genera\u021bia 10G (nu confunda\u021bi cu canalele de broadband 10G<\/a><\/noindex>care exist\u0103 deja). 10G va folosi radia\u021bii X dure - cele folosite \u00een medicin\u0103 \u0219i aeroporturi - pentru a transmite date. Sunt sigur c\u0103 cel pu\u021bin o startup va promova o aplica\u021bie mobil\u0103 pentru imagini cu raze X. Aceasta este, desigur, un avantaj - iar printre dezavantaje se num\u0103r\u0103 cancerul \u0219i arsurile solare, care se vor agrava pe m\u0103sur\u0103 ce semnalul va urca tot mai sus \u00een spectru.<\/p>\n

10G va fi disponibil \u00een 2068: 314 Ebit\/s, frecven\u021be de 4,44 EHz, 24,5 ns pentru desc\u0103rcarea filmului \u201eAvengers: Endgame\u201d \u00een rezolu\u021bie 4K.<\/p>\n

11G<\/h2>\n

\n\"Ultima
\n
\nAcum deja folosim radia\u021bii gamma pentru desc\u0103rcarea podcasturilor \u0219i streamingul video. Dac\u0103 e\u0219ti curios unde mai apar razele gamma, acestea au dou\u0103 surse principale - radia\u021bia cosmic\u0103 (particule care zboar\u0103 aproape cu viteza luminii), care se ciocne\u0219te cu moleculele din atmosfer\u0103, \u0219i fuziunea nuclear\u0103. Deci, dezavantajul este c\u0103 un apel c\u0103tre o persoan\u0103 va necesita bombardarea ambelor telefoane cu aceea\u0219i radia\u021bie care apare \u00een timpul test\u0103rii unei bombe cu hidrogen. Dar avantajul este c\u0103 vei putea desc\u0103rca toate datele acumulate de civiliza\u021bia uman\u0103 \u00een aproximativ 3 secunde - adic\u0103, acest lucru se va \u00eent\u00e2mpla \u00eenainte s\u0103 mori din cauza radia\u021biei.<\/p>\n

11G va fi disponibil \u00een 2078: 41,8 Zettabit\/s, frecven\u021be de 155 EHz, 184 ps pentru desc\u0103rcarea filmului \u201eAvengers: Endgame\u201d \u00een rezolu\u021bie 4K.<\/p>\n

15G<\/h2>\n

\n\"Ultima
\n
\n15G este linia de sosire. Dac\u0103 cineva \u00eencearc\u0103 s\u0103-\u021bi v\u00e2nd\u0103 un smartphone 16G, ignor\u0103-l - este complet absurd. Pentru 15G folosim raze gamma ultracoerente. Teoretic, exist\u0103 lungimi de und\u0103 mai scurte \u0219i cu energie mai mare, dar fizicienii nu le-au observat \u00eenc\u0103. \u0218i astfel de energii sunt observate \u00een principal doar la fotoni extrem de energetici care vin din ad\u00e2ncurile cosmosului. Apelurile telefonice se vor face prin fotoni, energia fiec\u0103rui foton fiind egal\u0103 cu energia unei bile de aer care a fost tras\u0103 dintr-o pu\u0219c\u0103 de aer. Va trebui s\u0103 cumperi telefoane noi frecvent, deoarece chiar \u0219i cele mai bine protejate telefoane vor fi deteriorate dup\u0103 fiecare desc\u0103rcare de informa\u021bii. La fel ca \u0219i tine - razele gamma au suficient\u0103 energie pentru a distruge moleculele de ADN.<\/p>\n

15G va fi disponibil \u00een 2118: 1,31 quibbit\/s (propus<\/a><\/noindex> pentru extinderea sistemului SI prefixul, care \u00eenseamn\u0103 1030), frecven\u021be de 230 Hz, 500 ms pentru desc\u0103rcarea filmului \u201eAvengers: Endgame\u201d \u00een rezolu\u021bie 4K (acesta, de altfel, este de 290 de ori mai mult dec\u00e2t \u201eunitatea natural\u0103\u201d de timp, care este de 1,3\u00d710^-21s).
\n
Sursa: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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